EP0125419B1 - Work lamp - Google Patents

Work lamp Download PDF

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Publication number
EP0125419B1
EP0125419B1 EP19840102761 EP84102761A EP0125419B1 EP 0125419 B1 EP0125419 B1 EP 0125419B1 EP 19840102761 EP19840102761 EP 19840102761 EP 84102761 A EP84102761 A EP 84102761A EP 0125419 B1 EP0125419 B1 EP 0125419B1
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EP
European Patent Office
Prior art keywords
lamp
work
light
lighting
lamp body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19840102761
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German (de)
French (fr)
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EP0125419A1 (en
Inventor
Alfred R. Kraner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Durlum Leuchten GmbH Lichttechnische Spezialfabrik
Original Assignee
Durlum Leuchten GmbH Lichttechnische Spezialfabrik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Durlum Leuchten GmbH Lichttechnische Spezialfabrik filed Critical Durlum Leuchten GmbH Lichttechnische Spezialfabrik
Publication of EP0125419A1 publication Critical patent/EP0125419A1/en
Application granted granted Critical
Publication of EP0125419B1 publication Critical patent/EP0125419B1/en
Expired legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation

Definitions

  • the invention relates to a workplace lamp, in particular for VDU workplaces with a spherical lamp body.
  • lighting is required to prevent frequent changes between special work at a specific point, such as e.g. B. is adapted to the screen and conventional desk work.
  • a specific point such as e.g. B. is adapted to the screen and conventional desk work.
  • the screen work For one activity, e.g. B. the screen work, a low level of lighting is desired, a high level of lighting may be required for conventional work at the desk or another place in the workplace. This cannot be achieved with the lamp according to DE-A-2 501 097.
  • the invention is therefore based on the object to provide a workplace lamp of the type mentioned, which fulfills opposing lighting requirements at different locations in the workplace, allows individual regulation of the lighting level and does not cause interference when it is used in a monitor workplace. At the same time, sufficient vertical illuminance should be achieved, but lamp replacement and maintenance should be easy.
  • the luminaire body is subdivided in that the upper half of the luminaire body in the assembled state has a lamp with a preferably adjustable reflector and an upwardly pointing light exit opening, and in that the lower half of the luminaire body in the assembled state about its vertical axis and a Horizontal axis is pivotable and has a lamp with a preferably parabolic reflector and an obliquely or directly downward light exit opening.
  • the predominantly indirect lighting achieves optimal contrast rendition values according to the «ESI method» (equivalent sphere llluminance), the vertical illuminance reaches a maximum of 1/2 to 2/3 of the horizontal illuminance, excessively high luminance jumps are avoided and remain in the ratio of 1 : 3: 10 according to DIN 5035 between screen, work area and environment. Interference reflections on the screen do not occur.
  • the visual performance is significantly increased by the improved visual conditions, without a high level of lighting.
  • the workplace lamp according to the invention allows the lighting to be individually adapted to the respective requirements. In this way, the actual workplace lighting can be switched off when working on a screen.
  • the indirect ceiling lighting results in a balanced, harmonious luminance distribution in the room and extremely low luminance contrasts on the ceiling. Interference reflections on the screen do not occur.
  • the workplace lamp can be switched on, the advantages of indirect ceiling lighting remain, the pivoting option of the workplace lamp allows the luminance to be individually adjusted at the desk.
  • VDU work and conventional work are carried out simultaneously or in rapid alternation, it is advantageous to switch on the actual workstation lamp and possibly increase the contrast on the screen somewhat. Due to the predominantly indirect lighting, optimal vertical and horizontal lighting is achieved, interference reflections on the screen do not occur. A reduction in visual performance is avoided by the high level of lighting.
  • the combination of room and workplace luminaires is energy-saving due to the reduction in general lighting from 750 lux to 450 lux. Fastening the luminaire to a mast (e.g. on a media column already available for cables) keeps the desk free, allows the heat generated to be dissipated and enables the luminaire location and direction of radiation to be changed individually. Further advantages, features and possible applications result from the figures described below.
  • Fig. 1 shows a schematic section through a luminous element of a workplace lamp according to the invention.
  • the luminous element 2 has a spherical shape and essentially consists of the two opaque hemispheres 4 and 6.
  • the upper hemisphere 4 contains a lamp 8 (for example high-performance lamp Osram HQI / TS) in a holder 10 and an adjustable reflector 12 which transmits the light throws to the ceiling through the light exit opening 14.
  • a lamp 8 for example high-performance lamp Osram HQI / TS
  • the lower hemisphere 6 contains a lamp 18 (eg Philips SL 25) in a socket and a parabolic reflector 20 which throws the light through the light exit opening 22 towards the work place.
  • the lower hemisphere 6 can be rotated about its vertical axis 24 and about a horizontal axis 23 (FIG. 2), the light cone of the lamp 18 - the actual workplace lighting - can be pivoted in this way.
  • the upper light exit opening 14 is closed with a domed cover plate made of silicate glass.
  • FIG. 2 shows a lamp 2 according to the invention, which is fastened to a media column (mast) 28 via an arm 27.
  • the lamp body consists of two hemispheres, the lower of which is rotatable about the axes 23 and 24.
  • the lamp body is pivotable about the mast 28.
  • the lower light exit opening 22 is closed with parabolically shaped longitudinal / transverse slats 32 matt anodized (darklight principle) against direct glare (luminance at 2: 60 ° beam angle to the vertical below 200 cd / sqm).
  • the air for heat dissipation enters at the lower light outlet opening and is sucked out of the air conditioning system by the arm 27 and mast 28 via flexible exhaust air hose (not shown) in the ceiling cavity.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

Die Erfindung betrifft eine Arbeitsplatzleuchte insbesondere für Bildschirmarbeitsplätze mit kugelförmigen Leuchtenkörper.The invention relates to a workplace lamp, in particular for VDU workplaces with a spherical lamp body.

Aus der DE-A-2 501 097 ist bereits eine Leuchte mit kugelförmigem Leuchtenkörper bekannt. Dabei ist dieser vorbekannte Leuchtenkörper aufgrund eines besonderen Leuchtensockels vor allem für Leuchtensäulen mit etagenartig übereinander angeordneten Leuchtenteilen geeignet. Somit ist diese vorbekannte Leuchte nicht für Arbeitsplätze beliebiger Art vorgesehen.From DE-A-2 501 097 a lamp with a spherical lamp body is already known. This previously known luminaire body is particularly suitable for luminaire columns with luminaire parts arranged one above the other due to a special luminaire base. Thus, this known lamp is not intended for workplaces of any kind.

Bei manchen Arbeitsplätzen, z. B. bei Bildschirmarbeitsplätzen wird eine Beleuchtung benötigt, die dem häufigen Wechsel zwischen einer speziellen Arbeit an einer bestimmten Stelle, wie z. B. dem Bildschirm und konventioneller Schreibtischarbeit angepaßt ist. Für die eine Tätigkeit, z. B. die Bildschirmarbeit ist dabei ein niedriges Beleuchtungsniveau erwünscht, zum konventionellen Arbeiten am Schreibtisch oder einer sonstigen weiteren Stelle des Arbeitsplatzes kann ein hohes Beleuchtungsniveau erforderlich sein. Dies läßt sich mit der Leuchte gemäß der DE-A-2 501 097 nicht erreichen.In some workplaces, e.g. B. in VDU workstations, lighting is required to prevent frequent changes between special work at a specific point, such as e.g. B. is adapted to the screen and conventional desk work. For one activity, e.g. B. the screen work, a low level of lighting is desired, a high level of lighting may be required for conventional work at the desk or another place in the workplace. This cannot be achieved with the lamp according to DE-A-2 501 097.

Der Erfindung liegt deshalb die Aufgabe zugrunde, eine Arbeitsplatzleuchte der eingangs erwähnten Art zu schaffen, die gegensätzliche lichttechnische Anforderungen an unterchiedlichen Stellen des Arbeitsplatzes erfüllt, eine individuelle Regelung des Beleuchtungsniveaus erlaubt und keine Störreflexe verursacht, wenn sie bei einem Bildschirm-Arbeitsplatz eingesetzt wird. Gleichzeitig soll eine ausreichende vertikale Beleuchtungsstärke erreichbar, der Lampenwechsel und die Wartung aber einfach sein.The invention is therefore based on the object to provide a workplace lamp of the type mentioned, which fulfills opposing lighting requirements at different locations in the workplace, allows individual regulation of the lighting level and does not cause interference when it is used in a monitor workplace. At the same time, sufficient vertical illuminance should be achieved, but lamp replacement and maintenance should be easy.

Gelöst wird diese Aufgabe dadurch, daß der Leuchtenkörper unterteilt ist, daß die im montierten Zustand obere Hälfte des Leuchtenkörpers eine Lampe mit vorzugsweise verstellbarem Reflektor und eine nach oben weisende Lichtaustrittsöffnung aufweist, und daß die im montierten Zustand untere Hälfte des Leuchtenkörpers um seine Vertikalachse und eine Horizontalachse schwenkbar ist und eine Lampe mit vorzugsweise parabolischem Reflektor und eine schräg oder direkt nach unten weisende Lichtaustrittsöffnung aufweist.This object is achieved in that the luminaire body is subdivided in that the upper half of the luminaire body in the assembled state has a lamp with a preferably adjustable reflector and an upwardly pointing light exit opening, and in that the lower half of the luminaire body in the assembled state about its vertical axis and a Horizontal axis is pivotable and has a lamp with a preferably parabolic reflector and an obliquely or directly downward light exit opening.

Die Unteransprüche 2 bis 4 enthalten Ausgestaltungen dieser Erfindung.The sub-claims 2 to 4 contain embodiments of this invention.

Durch die überwiegend indirekte Beleuchtung werden optimale Kontrastwiedergabewerte nach « ESI-Verfahren » (Equivalent sphere llluminance) erreicht, die vertikale Beleuchtungsstärke erreicht ein Maximum von 1/2 bis 2/3 der horizontalen Beleuchtungsstärke, zu hohe Leuchtdichtesprünge werden vermieden und bleiben im Verhältnis von 1 : 3 : 10 nach DIN 5035 zwischen Bildschirm, Arbeitsfeld und Umfeld. Störreflexe am Bildschirm treten nicht auf. Die Sehleistung wird durch die verbesserten visuellen Bedingungen, ohne hohes Beleuchtungsniveau, wesentlich gesteigert.The predominantly indirect lighting achieves optimal contrast rendition values according to the «ESI method» (equivalent sphere llluminance), the vertical illuminance reaches a maximum of 1/2 to 2/3 of the horizontal illuminance, excessively high luminance jumps are avoided and remain in the ratio of 1 : 3: 10 according to DIN 5035 between screen, work area and environment. Interference reflections on the screen do not occur. The visual performance is significantly increased by the improved visual conditions, without a high level of lighting.

Die erfindungsgemässe Arbeitsplatzleuchte erlaubt die individuelle Anpassung der Beleuchtung an die jeweiligen Anforderungen. So kann bei Bildschirmarbeiten die eigentliche Arbeitsplatzbeleuchtung abgeschaltet werden. Durch die indirekte Deckenbeleuchtung ergeben sich eine ausgewogene, harmonische Leuchtdichteverteilung im Raum und extrem niedrige Leuchtdichtekontraste an der Decke. Störreflexe auf dem Bildschirm treten nicht auf.The workplace lamp according to the invention allows the lighting to be individually adapted to the respective requirements. In this way, the actual workplace lighting can be switched off when working on a screen. The indirect ceiling lighting results in a balanced, harmonious luminance distribution in the room and extremely low luminance contrasts on the ceiling. Interference reflections on the screen do not occur.

Bei konventionellen Arbeiten kann die Arbeitsplatzleuchte zugeschaltet werden, die Vorteile der indirekten Deckenbeleuchtung bleiben, die Schwenkmöglichkeit der Arbeitsplatzleuchte erlaubt eine individuelle Einstellung der Leuchtdichte am Schreibtisch.For conventional work, the workplace lamp can be switched on, the advantages of indirect ceiling lighting remain, the pivoting option of the workplace lamp allows the luminance to be individually adjusted at the desk.

Werden Bildschirmarbeit und konventionelle Arbeit gleichzeitig oder in raschem Wechsel durchgeführt, ist es günstig, die eigentliche Arbeitsplatzleuchte zuzuschalten und eventuell den Kontrast am Bildschirm etwas zu erhöhen. Durch die überwiegend indirekte Beleuchtung wird eine optimale vertikale und horizontale Beleuchtung erreicht, Störreflexe am Bildschirm treten nicht auf. Eine Reduzierung der Sehleistung wird durch das hohe Beleuchtungsniveau vermieden. Die Kombination von Raum- und Arbeitsplatzleuchte ist durch die Reduzierung der Allgemeinbeleuchtung von 750 Lux auf 450 Lux energiesparend. Die Befestigung der Leuchte an einem Mast (z. B. an einer schon für Kabel vorhandenen Mediensäule) hält den Schreibtisch frei, erlaubt eine Abfuhr der entstehenden Wärme und ermöglicht eine individuelle Änderung von Leuchtenort und Abstrahlrichtung. Weitere Vorteile, Merkmale und Anwendungsmöglichkeiten ergeben sich aus den nachfolgend beschriebenen Figuren.If VDU work and conventional work are carried out simultaneously or in rapid alternation, it is advantageous to switch on the actual workstation lamp and possibly increase the contrast on the screen somewhat. Due to the predominantly indirect lighting, optimal vertical and horizontal lighting is achieved, interference reflections on the screen do not occur. A reduction in visual performance is avoided by the high level of lighting. The combination of room and workplace luminaires is energy-saving due to the reduction in general lighting from 750 lux to 450 lux. Fastening the luminaire to a mast (e.g. on a media column already available for cables) keeps the desk free, allows the heat generated to be dissipated and enables the luminaire location and direction of radiation to be changed individually. Further advantages, features and possible applications result from the figures described below.

Es zeigen :

  • Fig. 1 den Leuchtkörper einer Arbeitsplatzleuchte,
  • Fig. 2 eine Befestigungsmöglichkeit.
Show it :
  • 1 shows the filament of a workplace lamp,
  • Fig. 2 shows a mounting option.

Fig. 1 zeigt einen schematischen Schnitt durch einen Leuchtkörper einer erfindungsgemässen Arbeitsplatzleuchte. Der Leuchtkörper 2 besitzt Kugelform und besteht im wesentlichen aus den zwei undurchsichtigen Halbkugeln 4 und 6. Die obere Halbkugel 4 beinhaltet eine Lampe 8 (z. B. Hochleistungslampe Osram HQI/TS) in einer Fassung 10 und einen verstellbaren Reflektor 12, der das Licht durch die Lichtaustrittsöffnung 14 an die Decke wirft.Fig. 1 shows a schematic section through a luminous element of a workplace lamp according to the invention. The luminous element 2 has a spherical shape and essentially consists of the two opaque hemispheres 4 and 6. The upper hemisphere 4 contains a lamp 8 (for example high-performance lamp Osram HQI / TS) in a holder 10 and an adjustable reflector 12 which transmits the light throws to the ceiling through the light exit opening 14.

Die untere Halbkugel 6 beinhaltet eine Lampe 18 (z. B. Philips SL 25) in einer Fassung und einen parabolischen Reflektor 20, der das Licht durch die Lichtaustrittsöffnung 22 zum Arbeitsplatz hin wirft. Die untere Halbkugel 6 ist um ihre Vertikalachse 24 und um eine Horizontalachse 23 (Fig. 2) drehbar, der Lichtkegel der Lampe 18 - die eigentliche Arbeitsplatzbeleuchtung - kann so verschwenkt werden. Die obere Lichtaustrittsöffnung 14 ist mit einer gewölbten Abdeckscheibe aus Silikatglas geschlossen.The lower hemisphere 6 contains a lamp 18 (eg Philips SL 25) in a socket and a parabolic reflector 20 which throws the light through the light exit opening 22 towards the work place. The lower hemisphere 6 can be rotated about its vertical axis 24 and about a horizontal axis 23 (FIG. 2), the light cone of the lamp 18 - the actual workplace lighting - can be pivoted in this way. The upper light exit opening 14 is closed with a domed cover plate made of silicate glass.

Fig. 2 zeigt eine erfindungsgemässe Leuchte 2, die über einen Arm 27 an einer Mediensäule (Mast) 28 befestigt ist. Der Leuchtenkörper besteht aus zwei Halbkugeln, von denen die untere um die Achsen 23 und 24 drehbar ist. Der Leuchtenkörper ist um den Mast 28 schwenkbar.2 shows a lamp 2 according to the invention, which is fastened to a media column (mast) 28 via an arm 27. The lamp body consists of two hemispheres, the lower of which is rotatable about the axes 23 and 24. The lamp body is pivotable about the mast 28.

Die untere Lichtaustrittsöffnung 22 wird mit parabolisch geformten Längs-/Querlamellen 32 matt eloxiert (darklight-Prinzip) gegen direkte Blendung geschlossen (Leuchtdichte bei Ausstrahlungswinkel 2: 60° zur Senkrechten unter 200 cd/qm).The lower light exit opening 22 is closed with parabolically shaped longitudinal / transverse slats 32 matt anodized (darklight principle) against direct glare (luminance at 2: 60 ° beam angle to the vertical below 200 cd / sqm).

Die Luft zur Wärmeabfuhr tritt an der unteren Lichtaustrittsöffnung ein und wird durch den Arm 27 und Mast 28 über flexiblen Abluftschlauch (nicht gezeigt) im Deckenhohlraum von der Klimaanlage abgesaugt.The air for heat dissipation enters at the lower light outlet opening and is sucked out of the air conditioning system by the arm 27 and mast 28 via flexible exhaust air hose (not shown) in the ceiling cavity.

Claims (5)

1. A work lamp, in particular for work at a screen, including a spherical lamp body (1), characterized in that the lamp body (2) is subdivided, that in the mounted condition the top half (4) of the lamp body (2) has a light fitting (8) with a preferably adjustable reflector (12) and an opening (14) for the exit of light pointing upwardly, and that in the mounted condition the bottom half (6) of the lamp body (2) is adapted to be swivelled about the vertical axis (24) of the latter and about a horizontal axis (23) and has a light fitting (18) with a preferably parabolic reflector (20) and an opening (22) for the exit of light pointing downwardly at an inclination or directly.
2. The work lamp as claimed in claim 1. characterized in that the lamp is adapted to be attached with an arm (27) to a vertical standard (28) so as to be capable of swivelling.
3. The work lamp as claimed in claim 1, characterized in that the lamp is adapted to be integrated in a vertical standard (28), the heat generated in the lamp being dissipated through said standard (28).
4. The work lamp as claimed in any one of claims 1 to 3, characterized in that the lamp body (2) consists essentially of two nontransparent hemispheres (4 and 6).
5. The work lamp as claimed in any one of claims 1 to 4, characterized in that the air for the dissipation of heat can be drawn off at the opening (22) for the exit of light, through the arm (27) and the standard (28).
EP19840102761 1983-05-13 1984-03-14 Work lamp Expired EP0125419B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833317435 DE3317435A1 (en) 1983-05-13 1983-05-13 WORKPLACE LIGHT
DE3317435 1983-05-13

Publications (2)

Publication Number Publication Date
EP0125419A1 EP0125419A1 (en) 1984-11-21
EP0125419B1 true EP0125419B1 (en) 1987-11-11

Family

ID=6198889

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840102761 Expired EP0125419B1 (en) 1983-05-13 1984-03-14 Work lamp

Country Status (2)

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EP (1) EP0125419B1 (en)
DE (1) DE3317435A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2152197A (en) * 1937-11-26 1939-03-28 Century Lighting Inc Lighting fixture construction
US3609335A (en) * 1969-08-08 1971-09-28 American Sterilizer Co High intensity surgical light
DE2501097C3 (en) * 1975-01-13 1979-05-03 Bega Gantenbrink-Leuchten Ohg, 5750 Menden Base for attaching and centering a lamp
FR2319079A1 (en) * 1975-07-25 1977-02-18 Simonet Bernard Direct and indirect lighting unit - has fixed mounting for variable angle housings with lamps mounted on ball and socket joints

Also Published As

Publication number Publication date
EP0125419A1 (en) 1984-11-21
DE3317435A1 (en) 1984-11-15

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